About to buy a 2001 (X) CLK 230K. The arches have not gone yet - but when I ran my finger under them, the paint is starting to go. The car was originally imported from Germany (Bremen!) It has a full MBSH ... so if I took it to a UK dealer, should they sort out this corrosion free of charge? I've been told that because the car was originally imported, there may be a problem?